Revert "Do not allow vintf_fragments for modules installed in the filesystem"

This reverts commit d3d89ede.

Reason for revert: Likely culprit for b/379811732  - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Change-Id: I9d70e7ae4a7c9663d6bc25f0291df615dfc6d58b